44 A level Mathematics Paper 1 Edexcel 2018 Q1

In this A-level Mathematics video, Christina tackles a problem from the edXL board's June 2018 Paper One. The video focuses on using small angle approximations for trigonometric functions to find the approximate value of a given expression. Christina guides you through recalling and applying the approximations for sine, cosine, and tangent of small angles measured in radians. The solution demonstrates how to substitute these approximations into a trigonometric fraction involving cos(4 theta) and sin(3 theta). By carefully rewriting each term using the small angle formulas and then simplifying the resulting algebraic expression, the video clearly shows how to arrive at the final approximate value. This step-by-step walkthrough is ideal for students preparing for their A-level Maths exams. Visit AxiomTutoring.com for more resources and subscribe to @AxiomTutoringCourses for additional helpful videos.